\Pel`o*pon*ne"sian\, a. [L. Peloponnesius, fr. Peloponnesus, Gr. ?, lit., the Island of Pelops; ?, ?, Pelops + ? an island.] Of or pertaining to the Peloponnesus, or southern peninsula of Greece. -- n. A native or an inhabitant of the Peloponnesus.